Comparing the FS140 to the FSPD140

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ABR Electric in McKinney TX
https://www.nemasurge.org/faqs/

The FS140 and FSPD140 surge protectors are very similar models from Siemens. The primary differences are in SCCR rating and in the installation logistics. The VPR and MCOV ratings are slightly better on the FS140.
While both models have an audible alarm, the FSPD has a signal cable for connection to a dry contact (both NO, NC available) for external alarm - possibly for a light, siren, etc? With the FSPD leads being significantly shorter, the signal cable may allow for external alarm while the device itself is mounted inside the panel.
Currently, the FS140 is still in production, and per my Siemens' sources, is not being replaced by the Bolt Shield. In my region the 2 units are priced virtually the same, with similar lead times on delivery.

What are your thoughts and opinions? What is the situation in your region for these products?

Thank you,
James
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